diff --git a/app/dao/notifications_dao.py b/app/dao/notifications_dao.py
index 4d1fee9d1..ca1646467 100644
--- a/app/dao/notifications_dao.py
+++ b/app/dao/notifications_dao.py
@@ -466,7 +466,7 @@ def dao_timeout_notifications(cutoff_time, limit=100000):
         update(Notification)
         .filter(Notification.id.in_([n.id for n in notifications]))
         .values(
-            {"status": new_status, "updated_at": updated_at}, synchronize_session=False
+            {"status": new_status, "updated_at": updated_at}
         )
     )
     db.session.execute(stmt)
@@ -482,16 +482,16 @@ def dao_update_notifications_by_reference(references, update_dict):
         .filter(Notification.reference.in_(references))
         .values(update_dict)
     )
-    updated_count = db.stmt.execute(stmt)
+    updated_count = db.session.execute(stmt)
 
     updated_history_count = 0
     if updated_count != len(references):
         stmt = (
             select(NotificationHistory)
             .filter(NotificationHistory.reference.in_(references))
-            .values(update_dict, synchronize_session=False)
+            .values(update_dict)
         )
-        updated_history_count = db.stmt.execute(stmt)
+        updated_history_count = db.session.execute(stmt)
 
     return updated_count, updated_history_count